kookoaey



(No Model.) 2 Sheets-Sheet 1.

W. -P. KOOKOGEY. ELECTRICAL RAILWAY SIGNAL.

No. 396,748. Patented Jan. 29, 1889.

(No Model.) 2 SheetsSheet 2.

W. P. KO'OKOGEY.

ELECTRICAL RAILWAY SIGNAL. No. 396,748. Patented Jan. 2'9,-l889.

i i lww UNITED Trice,

PATENT WILLIAM P. KO()KOGEY, OE BROOKLYN, NEW YORK, ASSIGNOR TO TI'IE KOOKOGEY ELECTRIC COMPANY.

ELECTRICAL RAILWAY-SIGNAL.

SPECIFICATION forming part of Letters Patent No. 396,748, dated January 29, 1889.

Application filed June '7, 1837. $erial No. 240,530. (No model.) I

To (all whom it may concern:

Be it known that 1, WILLIAM P. KOOKOGEY, of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Electrical Signals for Railways, of which the following is a specification.

My invention relates to electric signals for railways; and itconsists in a novel arrangement of normally-open circuits which are successively closed by a passing train, and signals in said circuits actuated by electromagnets therein, which magnets are energized when the circuits are closed, as will be more fully explained in the following detailed description.

Referring to the accompanying drawings, Figure l is a diagram showing the circuits and signals as they appear when the tracks are clear; Figs. 2, 3, and 4-, similar diagrams showing the different positions of the signals under the completion or closing of different circuits.

The purpose of my invention is to give warning to the engineer of an approaching train it" the track ahead is obstructed, and

this result I attain by arranging a series of normally-open circuits in such manner that as the train passes over the length of track so guarded the circuits shall be successively closed and the signal of each circuit carried to danger or to safety, as required.

In the drawings, A and 13 indicate the two rails of an ordinary railway-track-the former insulated and the latter provided with three insulated sections, 1, 2, and The length of the insulated sections and the distances between them will be. varied as circumstances require. From the insulated section 1 a wire or conductor, a, passes to and connects with the helix of an electro-magnet, C, thence to a v battery or other source of electricity, D, thence to a circuit-closer, E, which normally makes electrical contact with a spring or contactplate, F, from which a wire or conductor, 1), extends to and connects with the helix of an electro-magnet, G, from which the wire 1) passes to rail A or to earth. In this way an open circuit is formed, which will, however,

be completed through the wheels and axles of a passing train bridging the rails.

Electro-magnet C is placed in proximity to an armature, c, carried by a pivoted signall blade, H, which blade is normally displayed i as a danger-signal, but which under the atl tractive action of the magnet upon the armal ture is drawn into a box or case and hidden from view, thus indicating safety at that point. At the same time, and energized by the same electric current, electro-magnet G acts upon the armature (l of a pivoted signalblade, I, which is normally hidden within a l case or behind a guard and causes said signal to be displayed to indicate safety. From insulated section 2 a wire or conductor, 6, passes to the helix of an electro-magnet, J, i thence to a battery, K, and finally to rail A. i From insulated section 23 a wire or conductor, l f, passes to the helixoi an electro-magnet, L, and thence to wire c, which passes to battery K and thence to rail A, as above mentioned.

Between the electro-magnets J and L is placed a swinging or pendulous circuit-closer, E, (for which other forms may of course be subst-ituted,) which makes contact alternately with spring or contact plate F at one side and a like contactsspring, H, at the other side, which latter spring connects by a wire or coni ductor, g, with the helix of an electro-magnet, N, said wire connecting with battery D either direct or through line a, by which latter said battery and the circuit-closer E are also connected.

The electromagnet N controls a signal, 0, which maybe of any desired character, visible or audible, and may be made to normally indicate either danger or safety, according to its location.

In the drawingsl have represented the sig nal as standing normally in position to indi- P cate safety, from which position it will be withdrawn by electro-magnet- N when the circuit of said magnet is completed.

The mechanical construction of the several signals is immaterial to the present invention, which relates solely to the means of controlling said signals.

In practice I contemplate using a lamp for the signal 0, and closing its circuit through the action of the magnet N; but no claim is made herein to such an arrangement, as that idea is embraced in a previous application filed by me.

The circuits being arranged as above set forth, the action is as follows: A train or 10- comotive running upon the track in the direction indicated by arrow enters upon the insulated section 1, bridges the rails A B by its wheels and axles, and completes the circuit through a O a D a E F b G 7) and the rails, thereby energizing magnets and G, withdrawing signal II from View, and moving signal I into View, thereby indicating safety. As the train leaves insulated section 1., the circuit is broken and the magnets C G become inactive, permitting signal II to re turn to danger and signal I to withdraw from View. \Vhen the train enters upon insulated section 2 and bridges the railsA B, a circuit completed from rail B through c .l e K e, rail A, and the wheels and axles of the locoi'notive or car, thereby energizing magnet J and causing it to attract circuit-closer E, withdrawing it from finger F and carrying it into contact with finger M. \Vhen this occurs, the circuit completed by the train while upon insulated section 1 is broken between E and F, and hence neither the signal It nor the signal I can beset to safety by a following train entering upon saidsection 1. \Vhc'n the train first mentioned enters upon insulated section 3 and bridges the rails A I), a circuit is completed through the wheels and axles of the train and the rails, wire or conductor f, electro-magnet L, wire f, wire 2, battery K, and wire e, the magnet L is energized, and the circuit-closer E is drawn by said magnet from plate or contact spring M to contact F, restorin g the first-described circuit, embracing insulated section 1, with the exception of the break between the rails A B. hen the contact between E and M is destroyed, the circuit of electro-magn'et N is broken, the magnet be comes inactive, and the signal 0 is permitted to return to safety. Section I} is at such distance from section 1 as to render it safe for a second train to enter upon section 1., so that the signals II and I may properly indicate safety for the approaching train; but. after the first train leaves section 1 and enters upon section 2, and until it enters upon section 3, thesignal 0 will indicate danger, and it will be impossible for a second train to change the signals 0 H I or any of them from danger to safety, because they are locked out by the break between E and F; hence the engineer of the second train will receive ample warning if the track is obstructed.

I have described and prefer to use a second signal, I, in addition to signal H, although it is apparent that it in effect only duplicates the safety-signal or indication given by with drawal of signal H; but I wish it distinctly understood that I claim the matters herein set forth, whethersignal I and its controllingm'agnet G be employed or omitted.

The reason for preferring the employment of signal I in addition to signal H that, I owing to mechanical imperfection, corrosion, I residual magnetism, or other like cause, a signal will at times fail to operate; but it will rarely happen that two will fail at the same time. In other words, the second signal is used simply out of abundant caution.

The details of the working course be Varied as desired.

Having thus described my invention, what I claim is 1. The herein-described signal apparatus, consisting of rail or ground connection A, rail B, provided with insulated sections 12 3, line or conductor a, connecting with section 1, electro-magnet C and battery D, included in said line, contactspring F, line b, electromagnet G, included in said line, signals H I, havii'ig armatures in. proximity to the magnets (1 and G, line or conductor 6, connecting at one end with section 2 and at the other end with rail or ground connection A, electromagnet J and battery K, included in said line, line or conductor f, connecting with section 3 and with line 6 between magnet J and battery K, circuit-closer E, located between the magnets .l and L, contact-spring M, line or conductor g, connecting said contact-sprin g M. with line a, between battery D and magnet C, and signal 0, placed within control of magnet N, all. substantially as described and shown.

2. The combination, with an insulated railsection, of a line or conductor extending therefrom to a grounded rail of the track, a battery, an electro-magnetic signal and a circuitcloser included in said line, a second insulated railsection, a line or conductor extending from said section to a ground-eonnection, a battery and an electro-magnet included in said line, a third insulated rail-section, a line parts may of or conductor connecting the same with the line or conductor of the second section at a point between the electro-magnet and the battery thereof, and a circuit-cl0ser located between the electro-magnets of the second and third lines or circuits, whereby the first circuit is broken at the circuit-closer when the second circuit is completed and is restored at said point when the third circuit is completed.

In combination with three insulated 'railsections and three electric circuits, each including one of said sections, an electro-magnetic signal in the first circuit, a circuit-closer adapted and arranged to form part of the first circuit until the second is completed and then to be withdrawn from the first, electromagnets in the second and third circuits serving to withdraw the circuit-closer from the first circuit while the second is complete and to restore it thereto while the third is complete, and a fourth circuit adapted to be closed by the circuit-closer whenever the second circuit is completed, all substantially as described and shown.

In witness whereof I hereunto set my hand in the presence of two witnesses.

wM. P. KooKoeEY. 

